PISTON RING Definition & Meaning

piston ring

noun

a metallic ring, usually one of a series, and split so as to be expansible, placed around a piston in order to maintain a tight fit, as inside the cylinder of an engine.

piston ring

noun

a split ring, usually made of cast iron, that fits into a groove on the rim of a piston to provide a spring-loaded seal against the cylinder wall

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51�Թ� History and Origins

Origin of piston ring¹

First recorded in 1865–70

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Example Sentences

Examples have not been reviewed.

The companies most endangered may be small machine shops in Michigan or Ontario that produce piston rings and other parts.

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The piston rings may not have been properly heat-treated, which can cause engine damage, oil leaks and possible fires.

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Mr. Carlisle, the racer, said the Ford engine that had been in his Mustang required new bearings and piston rings after every race.

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Then Uncle Hermilio asked Lucky about his car, and Lucky started talking about valves and piston rings and carburetors.

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He rested his hand on a rack of piston ring installers and timing gear pullers, and this man who lost so much of his family to hurricanes started talking about the parts of them.

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